﻿//
// (C) Copyright 2009 Irantha Suwandarathna (iranthas@hotmail.com)
// All rights reserved.
//

/* Copyright (c) 2001-2008, The HSQL Development Group
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EffiProz.Core.Lib;
using EffiProz.Core.DataTypes;
using EffiProz.Core.Indexes;
using EffiProz.Core.Errors;
using EffiProz.Core.Persist;
using EffiProz.Core.Results;

namespace EffiProz.Core
{
    public class StatementQuery : StatementDMQL
    {
        public StatementQuery(Session session, QueryExpression queryExpression,
                   ParserDML.CompileContext compileContext)
            : base(StatementTypes.SELECT_CURSOR, StatementTypes.X_SQL_DATA,
                session.getCurrentSchemaHsqlName())
        {

            this.queryExpression = queryExpression;

            setDatabseObjects(compileContext);
            checkAccessRights(session);
        }

        public override Result getResult(Session session)
        {

            Result result = queryExpression.getResult(session,
                session.getMaxRows());

            result.setStatement(this);

            return result;
        }

        public override ResultMetaData getResultMetaData()
        {

            switch (type)
            {

                case StatementTypes.SELECT_CURSOR:
                    return queryExpression.getMetaData();

                case StatementTypes.SELECT_SINGLE:
                    return queryExpression.getMetaData();

                default:
                    throw Error.runtimeError(
                        ErrorCode.U_S0500,
                        "CompiledStatement.getResultMetaData()");
            }
        }

        public override void collectTableNamesForRead(OrderedHashSet set)
        {

            queryExpression.getBaseTableNames(set);

            for (int i = 0; i < subqueries.Length; i++)
            {
                if (subqueries[i].queryExpression != null)
                {
                    subqueries[i].queryExpression.getBaseTableNames(set);
                }
            }
        }
    }
}
